I do not sprout my barley - did not know I had to??? I just mix it with their food. Should I completely stop giving them barley?
Look into the idea of fermented feed. It's easy, saves money, so healthy for your birds and they assimilate up to 12% more of the food. In other words, no corn in the poop. Fill a 5 gallon bucket 1/2 full of water and start adding grains or feed. Stirring as you go. When it's too dry, add more water. Lightly cover with a lid half on or a towel. Stir daily for 4-5 days. When it bubbles or smells like pickles it's done. Feed down to about 1/5 of the container and add more water and feed. Stir and cover and it's ready the next morning. Always keep some and it's done overnight. If you have an interest here is a site of a lady I trust to give the right info.
http://tikktok.wordpress.com/2014/04/13/fermented-feed-faq/